125440500025 has 6 divisors (see below), whose sum is σ = 155546220062. Its totient is φ = 100352400000.

The previous prime is 125440500013. The next prime is 125440500037. The reversal of 125440500025 is 520005044521.

It is an interprime number because it is at equal distance from previous prime (125440500013) and next prime (125440500037).

It can be written as a sum of positive squares in 3 ways, for example, as 642926736 + 124797573289 = 25356^2 + 353267^2 .

It is not a de Polignac number, because 125440500025 - 2¹⁷ = 125440368953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125440499966 and 125440500002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2508809976 + ... + 2508810025.

Almost surely, 2^125440500025 is an apocalyptic number.

It is an amenable number.

125440500025 is a deficient number, since it is larger than the sum of its proper divisors (30105720037).

125440500025 is an equidigital number, since it uses as much as digits as its factorization.

125440500025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017620011 (or 5017620006 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 125440500025 its reverse (520005044521), we get a palindrome (645445544546).

The spelling of 125440500025 in words is "one hundred twenty-five billion, four hundred forty million, five hundred thousand, twenty-five".