212425611540 has 48 divisors (see below), whose sum is σ = 598114601280. Its totient is φ = 56330364160.

The previous prime is 212425611529. The next prime is 212425611547. The reversal of 212425611540 is 45116524212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212425611547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9878721 + ... + 9900200.

It is an arithmetic number, because the mean of its divisors is an integer number (12460720860).

Almost surely, 2^212425611540 is an apocalyptic number.

212425611540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212425611540 is an abundant number, since it is smaller than the sum of its proper divisors (385688989740).

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

212425611540 is a wasteful number, since it uses less digits than its factorization.

212425611540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19779112 (or 19779110 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 212425611540 in words is "two hundred twelve billion, four hundred twenty-five million, six hundred eleven thousand, five hundred forty".