152121402225 has 72 divisors (see below), whose sum is σ = 297445224440. Its totient is φ = 73864535040.

The previous prime is 152121402221. The next prime is 152121402227. The reversal of 152121402225 is 522204121251.

152121402225 is a `hidden beast` number, since 15 + 2 + 1 + 21 + 402 + 225 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 53545497201 + 98575905024 = 231399^2 + 313968^2 .

It is not a de Polignac number, because 152121402225 - 2² = 152121402221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (152121402221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 142690 + ... + 569739.

Almost surely, 2^152121402225 is an apocalyptic number.

152121402225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

152121402225 is a deficient number, since it is larger than the sum of its proper divisors (145323822215).

152121402225 is a wasteful number, since it uses less digits than its factorization.

152121402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712531 (or 712523 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 152121402225 its reverse (522204121251), we get a palindrome (674325523476).

The spelling of 152121402225 in words is "one hundred fifty-two billion, one hundred twenty-one million, four hundred two thousand, two hundred twenty-five".