25542123452 has 12 divisors (see below), whose sum is σ = 44711991576. Its totient is φ = 12767268720.

The previous prime is 25542123427. The next prime is 25542123479. The reversal of 25542123452 is 25432124552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933074 + ... + 960057.

It is an arithmetic number, because the mean of its divisors is an integer number (3725999298).

Almost surely, 2^25542123452 is an apocalyptic number.

It is an amenable number.

25542123452 is a deficient number, since it is larger than the sum of its proper divisors (19169868124).

25542123452 is a wasteful number, since it uses less digits than its factorization.

25542123452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896508 (or 1896506 counting only the distinct ones).

The product of its digits is 96000, while the sum is 35.

The spelling of 25542123452 in words is "twenty-five billion, five hundred forty-two million, one hundred twenty-three thousand, four hundred fifty-two".