25138990093 has 16 divisors (see below), whose sum is σ = 29234532096. Its totient is φ = 21171588480.

The previous prime is 25138990073. The next prime is 25138990103. The reversal of 25138990093 is 39009983152.

It is not a de Polignac number, because 25138990093 - 2⁵ = 25138990061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138990033) 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 15 ways as a sum of consecutive naturals, for example, 59305 + ... + 231937.

It is an arithmetic number, because the mean of its divisors is an integer number (1827158256).

Almost surely, 2^25138990093 is an apocalyptic number.

It is an amenable number.

25138990093 is a deficient number, since it is larger than the sum of its proper divisors (4095542003).

25138990093 is a wasteful number, since it uses less digits than its factorization.

25138990093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173004.

The product of its (nonzero) digits is 524880, while the sum is 49.

The spelling of 25138990093 in words is "twenty-five billion, one hundred thirty-eight million, nine hundred ninety thousand, ninety-three".