125212004658 has 80 divisors (see below), whose sum is σ = 310316169240. Its totient is φ = 37485483264.

The previous prime is 125212004651. The next prime is 125212004689. The reversal of 125212004658 is 856400212521.

It can be written as a sum of positive squares in 4 ways, for example, as 125211945609 + 59049 = 353853^2 + 243^2 .

It is a super-2 number, since 2×125212004658² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125212004651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 725523 + ... + 881366.

Almost surely, 2^125212004658 is an apocalyptic number.

125212004658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125212004658 is an abundant number, since it is smaller than the sum of its proper divisors (185104164582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125212004658 is a wasteful number, since it uses less digits than its factorization.

125212004658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606953 (or 1606944 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 125212004658 in words is "one hundred twenty-five billion, two hundred twelve million, four thousand, six hundred fifty-eight".