915825461 has 2 divisors, whose sum is σ = 915825462. Its totient is φ = 915825460.

The previous prime is 915825439. The next prime is 915825509. The reversal of 915825461 is 164528519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887682436 + 28143025 = 29794^2 + 5305^2 .

It is an emirp because it is prime and its reverse (164528519) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 915825461 - 2²² = 911631157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (915825401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457912730 + 457912731.

It is an arithmetic number, because the mean of its divisors is an integer number (457912731).

Almost surely, 2^915825461 is an apocalyptic number.

It is an amenable number.

915825461 is a deficient number, since it is larger than the sum of its proper divisors (1).

915825461 is an equidigital number, since it uses as much as digits as its factorization.

915825461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 915825461 is about 30262.6082980301. The cubic root of 915825461 is about 971.1155412597.

The spelling of 915825461 in words is "nine hundred fifteen million, eight hundred twenty-five thousand, four hundred sixty-one".