125404131251 has 8 divisors (see below), whose sum is σ = 151749537120. Its totient is φ = 101166357888.

The previous prime is 125404131247. The next prime is 125404131263. The reversal of 125404131251 is 152131404521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125404131251 - 2² = 125404131247 is a prime.

It is a super-2 number, since 2×125404131251² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125404130251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526907996 + ... + 526908233.

It is an arithmetic number, because the mean of its divisors is an integer number (18968692140).

Almost surely, 2^125404131251 is an apocalyptic number.

125404131251 is a deficient number, since it is larger than the sum of its proper divisors (26345405869).

125404131251 is a wasteful number, since it uses less digits than its factorization.

125404131251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053816253.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 125404131251 its reverse (152131404521), we get a palindrome (277535535772).

The spelling of 125404131251 in words is "one hundred twenty-five billion, four hundred four million, one hundred thirty-one thousand, two hundred fifty-one".