125402025 has 36 divisors (see below), whose sum is σ = 241188432. Its totient is φ = 57324960.

The previous prime is 125402021. The next prime is 125402029. The reversal of 125402025 is 520204521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125402021) and next prime (125402029).

It is not a de Polignac number, because 125402025 - 2² = 125402021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 125401992 and 125402010.

It is not an unprimeable number, because it can be changed into a prime (125402021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13387 + ... + 20736.

Almost surely, 2^125402025 is an apocalyptic number.

125402025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125402025 is a deficient number, since it is larger than the sum of its proper divisors (115786407).

125402025 is a wasteful number, since it uses less digits than its factorization.

125402025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34150 (or 34138 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 125402025 is about 11198.3045591732. The cubic root of 125402025 is about 500.5354596945.

Adding to 125402025 its reverse (520204521), we get a palindrome (645606546).

The spelling of 125402025 in words is "one hundred twenty-five million, four hundred two thousand, twenty-five".