25404315252 has 24 divisors (see below), whose sum is σ = 59379484416. Its totient is φ = 8453426688.

The previous prime is 25404315239. The next prime is 25404315263. The reversal of 25404315252 is 25251340452.

It is a happy number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1827588 + ... + 1841435.

It is an arithmetic number, because the mean of its divisors is an integer number (2474145184).

Almost surely, 2^25404315252 is an apocalyptic number.

It is an amenable number.

25404315252 is an abundant number, since it is smaller than the sum of its proper divisors (33975169164).

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

25404315252 is a wasteful number, since it uses less digits than its factorization.

25404315252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669607 (or 3669605 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 25404315252 in words is "twenty-five billion, four hundred four million, three hundred fifteen thousand, two hundred fifty-two".