125754368149 has 4 divisors (see below), whose sum is σ = 125821510636. Its totient is φ = 125687225664.

The previous prime is 125754368137. The next prime is 125754368177. The reversal of 125754368149 is 941863457521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3259268100 + 122495100049 = 57090^2 + 349993^2 .

It is a cyclic number.

It is not a de Polignac number, because 125754368149 - 2⁷ = 125754368021 is a prime.

It is a super-2 number, since 2×125754368149² (a number of 23 digits) contains 22 as substring.

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 125754368149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125754368119) 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, 33568434 + ... + 33572179.

It is an arithmetic number, because the mean of its divisors is an integer number (31455377659).

Almost surely, 2^125754368149 is an apocalyptic number.

It is an amenable number.

125754368149 is a deficient number, since it is larger than the sum of its proper divisors (67142487).

125754368149 is an equidigital number, since it uses as much as digits as its factorization.

125754368149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67142486.

The product of its digits is 7257600, while the sum is 55.

The spelling of 125754368149 in words is "one hundred twenty-five billion, seven hundred fifty-four million, three hundred sixty-eight thousand, one hundred forty-nine".