25225258785937 has 6 divisors (see below), whose sum is σ = 29343668383698. Its totient is φ = 21621650387904.

The previous prime is 25225258785917. The next prime is 25225258786009. The reversal of 25225258785937 is 73958785252252.

It can be written as a sum of positive squares in only one way, i.e., 19648217582161 + 5577041203776 = 4432631^2 + 2361576^2 .

It is not a de Polignac number, because 25225258785937 - 2⁷ = 25225258785809 is a prime.

It is a super-2 number, since 2×25225258785937² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25225258785917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 257400599808 + ... + 257400599905.

It is an arithmetic number, because the mean of its divisors is an integer number (4890611397283).

Almost surely, 2^{25225258785937} is an apocalyptic number.

It is an amenable number.

25225258785937 is a deficient number, since it is larger than the sum of its proper divisors (4118409597761).

25225258785937 is an equidigital number, since it uses as much as digits as its factorization.

25225258785937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514801199727 (or 514801199720 counting only the distinct ones).

The product of its digits is 846720000, while the sum is 70.

The spelling of 25225258785937 in words is "twenty-five trillion, two hundred twenty-five billion, two hundred fifty-eight million, seven hundred eighty-five thousand, nine hundred thirty-seven".