25520411245434 has 32 divisors (see below), whose sum is σ = 58332526202880. Its totient is φ = 7291526364912.

The previous prime is 25520411245391. The next prime is 25520411245457. The reversal of 25520411245434 is 43454211402552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23114227 + ... + 24193145.

It is an arithmetic number, because the mean of its divisors is an integer number (1822891443840).

Almost surely, 2^{25520411245434} is an apocalyptic number.

25520411245434 is an abundant number, since it is smaller than the sum of its proper divisors (32812114957446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25520411245434 is a wasteful number, since it uses less digits than its factorization.

25520411245434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642114.

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 25520411245434 its reverse (43454211402552), we get a palindrome (68974622647986).

The spelling of 25520411245434 in words is "twenty-five trillion, five hundred twenty billion, four hundred eleven million, two hundred forty-five thousand, four hundred thirty-four".