2525445440 has 224 divisors, whose sum is σ = 7097207040. Its totient is φ = 838139904.

The previous prime is 2525445431. The next prime is 2525445443. The reversal of 2525445440 is 445445252.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2525445440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525445443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12819422 + ... + 12819618.

It is an arithmetic number, because the mean of its divisors is an integer number (31683960).

Almost surely, 2^2525445440 is an apocalyptic number.

2525445440 is a gapful number since it is divisible by the number (20) 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 2525445440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3548603520).

2525445440 is an abundant number, since it is smaller than the sum of its proper divisors (4571761600).

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

2525445440 is a wasteful number, since it uses less digits than its factorization.

2525445440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

The square root of 2525445440 is about 50253.8102038044. The cubic root of 2525445440 is about 1361.7979104782.

The spelling of 2525445440 in words is "two billion, five hundred twenty-five million, four hundred forty-five thousand, four hundred forty".