25421453052 has 48 divisors (see below), whose sum is σ = 60486045312. Its totient is φ = 8307679680.

The previous prime is 25421453039. The next prime is 25421453053. The reversal of 25421453052 is 25035412452.

It is a happy number.

It is a super-2 number, since 2×25421453052² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25421453053) 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, 168163 + ... + 281285.

It is an arithmetic number, because the mean of its divisors is an integer number (1260125944).

Almost surely, 2^25421453052 is an apocalyptic number.

It is an amenable number.

25421453052 is an abundant number, since it is smaller than the sum of its proper divisors (35064592260).

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

25421453052 is a wasteful number, since it uses less digits than its factorization.

25421453052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113498 (or 113496 counting only the distinct ones).

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

The spelling of 25421453052 in words is "twenty-five billion, four hundred twenty-one million, four hundred fifty-three thousand, fifty-two".