25405015052 has 6 divisors (see below), whose sum is σ = 44458776348. Its totient is φ = 12702507524.

The previous prime is 25405015039. The next prime is 25405015057. The reversal of 25405015052 is 25051050452.

It is not an unprimeable number, because it can be changed into a prime (25405015057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3175626878 + ... + 3175626885.

It is an arithmetic number, because the mean of its divisors is an integer number (7409796058).

Almost surely, 2^25405015052 is an apocalyptic number.

It is an amenable number.

25405015052 is a deficient number, since it is larger than the sum of its proper divisors (19053761296).

25405015052 is a wasteful number, since it uses less digits than its factorization.

25405015052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351253767 (or 6351253765 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 25405015052 in words is "twenty-five billion, four hundred five million, fifteen thousand, fifty-two".