25505552 has 10 divisors (see below), whose sum is σ = 49417038. Its totient is φ = 12752768.

The previous prime is 25505549. The next prime is 25505609. The reversal of 25505552 is 25550552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20647936 + 4857616 = 4544^2 + 2204^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 797033 + ... + 797064.

Almost surely, 2^25505552 is an apocalyptic number.

It is an amenable number.

25505552 is a deficient number, since it is larger than the sum of its proper divisors (23911486).

25505552 is a wasteful number, since it uses less digits than its factorization.

25505552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594105 (or 1594099 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 25505552 is about 5050.3021691776. The cubic root of 25505552 is about 294.3596259418.

The spelling of 25505552 in words is "twenty-five million, five hundred five thousand, five hundred fifty-two".