25405700542 has 8 divisors (see below), whose sum is σ = 38112811632. Its totient is φ = 12701430000.

The previous prime is 25405700513. The next prime is 25405700557. The reversal of 25405700542 is 24500750452.

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

It is a junction number, because it is equal to n+sod(n) for n = 25405700498 and 25405700507.

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, 687634 + ... + 723637.

It is an arithmetic number, because the mean of its divisors is an integer number (4764101454).

Almost surely, 2^25405700542 is an apocalyptic number.

25405700542 is a deficient number, since it is larger than the sum of its proper divisors (12707111090).

25405700542 is a wasteful number, since it uses less digits than its factorization.

25405700542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420274.

The product of its (nonzero) digits is 56000, while the sum is 34.

The spelling of 25405700542 in words is "twenty-five billion, four hundred five million, seven hundred thousand, five hundred forty-two".