25620564142 has 8 divisors (see below), whose sum is σ = 39248523936. Its totient is φ = 12537722832.

The previous prime is 25620564113. The next prime is 25620564149. The reversal of 25620564142 is 24146502652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620564149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136279503 + ... + 136279690.

It is an arithmetic number, because the mean of its divisors is an integer number (4906065492).

Almost surely, 2^25620564142 is an apocalyptic number.

25620564142 is a deficient number, since it is larger than the sum of its proper divisors (13627959794).

25620564142 is a wasteful number, since it uses less digits than its factorization.

25620564142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272559242.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25620564142 in words is "twenty-five billion, six hundred twenty million, five hundred sixty-four thousand, one hundred forty-two".