25400562 has 48 divisors (see below), whose sum is σ = 56881440. Its totient is φ = 7553920.

The previous prime is 25400561. The next prime is 25400593. The reversal of 25400562 is 26500452.

It is not an unprimeable number, because it can be changed into a prime (25400561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42538 + ... + 43130.

It is an arithmetic number, because the mean of its divisors is an integer number (1185030).

Almost surely, 2^25400562 is an apocalyptic number.

25400562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25400562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28440720).

25400562 is an abundant number, since it is smaller than the sum of its proper divisors (31480878).

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

25400562 is a wasteful number, since it uses less digits than its factorization.

25400562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25400562 is about 5039.8970227575. The cubic root of 25400562 is about 293.9551738775.

The spelling of 25400562 in words is "twenty-five million, four hundred thousand, five hundred sixty-two".