25249694252 has 6 divisors (see below), whose sum is σ = 44186964948. Its totient is φ = 12624847124.

The previous prime is 25249694243. The next prime is 25249694311.

25249694252 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25249694252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3156211778 + ... + 3156211785.

It is an arithmetic number, because the mean of its divisors is an integer number (7364494158).

Almost surely, 2^25249694252 is an apocalyptic number.

It is an amenable number.

25249694252 is a deficient number, since it is larger than the sum of its proper divisors (18937270696).

25249694252 is a wasteful number, since it uses less digits than its factorization.

25249694252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312423567 (or 6312423565 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The spelling of 25249694252 in words is "twenty-five billion, two hundred forty-nine million, six hundred ninety-four thousand, two hundred fifty-two".