25400749005 has 24 divisors (see below), whose sum is σ = 44045557920. Its totient is φ = 13541652960.

The previous prime is 25400749001. The next prime is 25400749009. The reversal of 25400749005 is 50094700452.

It is an interprime number because it is at equal distance from previous prime (25400749001) and next prime (25400749009).

It is not a de Polignac number, because 25400749005 - 2² = 25400749001 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25400749001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2386 + ... + 225404.

It is an arithmetic number, because the mean of its divisors is an integer number (1835231580).

Almost surely, 2^25400749005 is an apocalyptic number.

It is an amenable number.

25400749005 is a deficient number, since it is larger than the sum of its proper divisors (18644808915).

25400749005 is a wasteful number, since it uses less digits than its factorization.

25400749005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225561 (or 225558 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 25400749005 in words is "twenty-five billion, four hundred million, seven hundred forty-nine thousand, five".