45025440 has 96 divisors (see below), whose sum is σ = 149325120. Its totient is φ = 11372544.

The previous prime is 45025433. The next prime is 45025447. The reversal of 45025440 is 4452054.

It is an interprime number because it is at equal distance from previous prime (45025433) and next prime (45025447).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 45025440.

It is not an unprimeable number, because it can be changed into a prime (45025447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6652 + ... + 11588.

It is an arithmetic number, because the mean of its divisors is an integer number (1555470).

Almost surely, 2^45025440 is an apocalyptic number.

45025440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45025440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74662560).

45025440 is an abundant number, since it is smaller than the sum of its proper divisors (104299680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45025440 is a wasteful number, since it uses less digits than its factorization.

45025440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4974 (or 4966 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 45025440 is about 6710.0998502258. The cubic root of 45025440 is about 355.7563455002.

Adding to 45025440 its reverse (4452054), we get a palindrome (49477494).

The spelling of 45025440 in words is "forty-five million, twenty-five thousand, four hundred forty".