25305212504 has 64 divisors (see below), whose sum is σ = 59021252640. Its totient is φ = 9993000960.

The previous prime is 25305212479. The next prime is 25305212507. The reversal of 25305212504 is 40521250352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305212507) 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, 631139 + ... + 670034.

Almost surely, 2^25305212504 is an apocalyptic number.

It is an amenable number.

25305212504 is an abundant number, since it is smaller than the sum of its proper divisors (33716040136).

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

25305212504 is a wasteful number, since it uses less digits than its factorization.

25305212504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301220 (or 1301216 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 25305212504 its reverse (40521250352), we get a palindrome (65826462856).

The spelling of 25305212504 in words is "twenty-five billion, three hundred five million, two hundred twelve thousand, five hundred four".