25502503212 has 48 divisors (see below), whose sum is σ = 66163574400. Its totient is φ = 8494923600.

The previous prime is 25502503211. The next prime is 25502503219. The reversal of 25502503212 is 21230520552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25502503211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75339 + ... + 238077.

It is an arithmetic number, because the mean of its divisors is an integer number (1378407800).

Almost surely, 2^25502503212 is an apocalyptic number.

It is an amenable number.

25502503212 is an abundant number, since it is smaller than the sum of its proper divisors (40661071188).

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

25502503212 is a wasteful number, since it uses less digits than its factorization.

25502503212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164203 (or 164195 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 25502503212 in words is "twenty-five billion, five hundred two million, five hundred three thousand, two hundred twelve".