25426002073 has 4 divisors (see below), whose sum is σ = 26531480448. Its totient is φ = 24320523700.

The previous prime is 25426002029. The next prime is 25426002131. The reversal of 25426002073 is 37020062452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25426002073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25426002013) 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, 552739153 + ... + 552739198.

It is an arithmetic number, because the mean of its divisors is an integer number (6632870112).

Almost surely, 2^25426002073 is an apocalyptic number.

25426002073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25426002073 is a deficient number, since it is larger than the sum of its proper divisors (1105478375).

25426002073 is a wasteful number, since it uses less digits than its factorization.

25426002073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105478374.

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 25426002073 in words is "twenty-five billion, four hundred twenty-six million, two thousand, seventy-three".