125215212 has 24 divisors (see below), whose sum is σ = 292619376. Its totient is φ = 41674048.

The previous prime is 125215201. The next prime is 125215219. The reversal of 125215212 is 212512521.

It is not an unprimeable number, because it can be changed into a prime (125215219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418 + ... + 15830.

It is an arithmetic number, because the mean of its divisors is an integer number (12192474).

Almost surely, 2^125215212 is an apocalyptic number.

125215212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125215212 is an abundant number, since it is smaller than the sum of its proper divisors (167404164).

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

125215212 is a wasteful number, since it uses less digits than its factorization.

125215212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16097 (or 16095 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 125215212 is about 11189.9603216455. The cubic root of 125215212 is about 500.2867848108.

Adding to 125215212 its reverse (212512521), we get a palindrome (337727733).

The spelling of 125215212 in words is "one hundred twenty-five million, two hundred fifteen thousand, two hundred twelve".