25542464 has 14 divisors (see below), whose sum is σ = 50685954. Its totient is φ = 12771200.

The previous prime is 25542437. The next prime is 25542493. The reversal of 25542464 is 46424552.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 462400 = 5008^2 + 680^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 25542464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199487 + ... + 199614.

Almost surely, 2^25542464 is an apocalyptic number.

It is an amenable number.

25542464 is a deficient number, since it is larger than the sum of its proper divisors (25143490).

25542464 is an equidigital number, since it uses as much as digits as its factorization.

25542464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399113 (or 399103 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 25542464 is about 5053.9552827464. The cubic root of 25542464 is about 294.5015579833.

The spelling of 25542464 in words is "twenty-five million, five hundred forty-two thousand, four hundred sixty-four".