125154351878 has 4 divisors (see below), whose sum is σ = 187731527820. Its totient is φ = 62577175938.

The previous prime is 125154351871. The next prime is 125154351941. The reversal of 125154351878 is 878153451521.

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

It is a super-2 number, since 2×125154351878² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125154351871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31288587968 + ... + 31288587971.

It is an arithmetic number, because the mean of its divisors is an integer number (46932881955).

Almost surely, 2^125154351878 is an apocalyptic number.

125154351878 is a deficient number, since it is larger than the sum of its proper divisors (62577175942).

125154351878 is an equidigital number, since it uses as much as digits as its factorization.

125154351878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62577175941.

The product of its digits is 1344000, while the sum is 50.

The spelling of 125154351878 in words is "one hundred twenty-five billion, one hundred fifty-four million, three hundred fifty-one thousand, eight hundred seventy-eight".