25090056997 has 2 divisors, whose sum is σ = 25090056998. Its totient is φ = 25090056996.

The previous prime is 25090056967. The next prime is 25090057001. The reversal of 25090056997 is 79965009052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15990614116 + 9099442881 = 126454^2 + 95391^2 .

It is a cyclic number.

It is not a de Polignac number, because 25090056997 - 2⁷ = 25090056869 is a prime.

It is a super-2 number, since 2×25090056997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25090056967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12545028498 + 12545028499.

It is an arithmetic number, because the mean of its divisors is an integer number (12545028499).

Almost surely, 2^25090056997 is an apocalyptic number.

It is an amenable number.

25090056997 is a deficient number, since it is larger than the sum of its proper divisors (1).

25090056997 is an equidigital number, since it uses as much as digits as its factorization.

25090056997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 52.

The spelling of 25090056997 in words is "twenty-five billion, ninety million, fifty-six thousand, nine hundred ninety-seven".