125551528331 has 32 divisors (see below), whose sum is σ = 132055891968. Its totient is φ = 119228591520.

The previous prime is 125551528307. The next prime is 125551528337. The reversal of 125551528331 is 133825155521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125551528331 - 2¹⁸ = 125551266187 is a prime.

It is a super-2 number, since 2×125551528331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125551528337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257805770 + ... + 257806256.

It is an arithmetic number, because the mean of its divisors is an integer number (4126746624).

Almost surely, 2^125551528331 is an apocalyptic number.

125551528331 is a deficient number, since it is larger than the sum of its proper divisors (6504363637).

125551528331 is a wasteful number, since it uses less digits than its factorization.

125551528331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its digits is 180000, while the sum is 41.

The spelling of 125551528331 in words is "one hundred twenty-five billion, five hundred fifty-one million, five hundred twenty-eight thousand, three hundred thirty-one".