25402134254 has 16 divisors (see below), whose sum is σ = 43565728608. Its totient is φ = 10881825792.

The previous prime is 25402134229. The next prime is 25402134259. The reversal of 25402134254 is 45243120452.

It is a self number, because there is not a number n which added to its sum of digits gives 25402134254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402134259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367307 + ... + 430950.

It is an arithmetic number, because the mean of its divisors is an integer number (2722858038).

Almost surely, 2^25402134254 is an apocalyptic number.

25402134254 is a deficient number, since it is larger than the sum of its proper divisors (18163594354).

25402134254 is a wasteful number, since it uses less digits than its factorization.

25402134254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800539.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 25402134254 in words is "twenty-five billion, four hundred two million, one hundred thirty-four thousand, two hundred fifty-four".