125520253 has 4 divisors (see below), whose sum is σ = 125648928. Its totient is φ = 125391580.

The previous prime is 125520247. The next prime is 125520259. The reversal of 125520253 is 352025521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352025521 = 19 ⋅18527659.

It is an interprime number because it is at equal distance from previous prime (125520247) and next prime (125520259).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125520253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125520259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62863 + ... + 64828.

It is an arithmetic number, because the mean of its divisors is an integer number (31412232).

Almost surely, 2^125520253 is an apocalyptic number.

It is an amenable number.

125520253 is a deficient number, since it is larger than the sum of its proper divisors (128675).

125520253 is an equidigital number, since it uses as much as digits as its factorization.

125520253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128674.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 125520253 is about 11203.5821503660. The cubic root of 125520253 is about 500.6927105277.

Adding to 125520253 its reverse (352025521), we get a palindrome (477545774).

The spelling of 125520253 in words is "one hundred twenty-five million, five hundred twenty thousand, two hundred fifty-three".