125453540251 has 32 divisors (see below), whose sum is σ = 140310309888. Its totient is φ = 111414683520.

The previous prime is 125453540243. The next prime is 125453540287. The reversal of 125453540251 is 152045354521.

It is a cyclic number.

It is not a de Polignac number, because 125453540251 - 2³ = 125453540243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125453540251.

It is not an unprimeable number, because it can be changed into a prime (125453540551) 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, 32473746 + ... + 32477608.

It is an arithmetic number, because the mean of its divisors is an integer number (4384697184).

Almost surely, 2^125453540251 is an apocalyptic number.

125453540251 is a deficient number, since it is larger than the sum of its proper divisors (14856769637).

125453540251 is a wasteful number, since it uses less digits than its factorization.

125453540251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 125453540251 its reverse (152045354521), we get a palindrome (277498894772).

The spelling of 125453540251 in words is "one hundred twenty-five billion, four hundred fifty-three million, five hundred forty thousand, two hundred fifty-one".