25405135256054 has 16 divisors (see below), whose sum is σ = 39823586592768. Its totient is φ = 12143176968552.

The previous prime is 25405135255979. The next prime is 25405135256063. The reversal of 25405135256054 is 45065253150452.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3142640102 + ... + 3142648185.

It is an arithmetic number, because the mean of its divisors is an integer number (2488974162048).

Almost surely, 2^{25405135256054} is an apocalyptic number.

25405135256054 is a deficient number, since it is larger than the sum of its proper divisors (14418451336714).

25405135256054 is a wasteful number, since it uses less digits than its factorization.

25405135256054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6285288379.

The product of its (nonzero) digits is 3600000, while the sum is 47.

The spelling of 25405135256054 in words is "twenty-five trillion, four hundred five billion, one hundred thirty-five million, two hundred fifty-six thousand, fifty-four".