2515256477 has 2 divisors, whose sum is σ = 2515256478. Its totient is φ = 2515256476.

The previous prime is 2515256473. The next prime is 2515256489. The reversal of 2515256477 is 7746525152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2467009561 + 48246916 = 49669^2 + 6946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515256477 - 2² = 2515256473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2515256473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257628238 + 1257628239.

It is an arithmetic number, because the mean of its divisors is an integer number (1257628239).

Almost surely, 2^2515256477 is an apocalyptic number.

It is an amenable number.

2515256477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515256477 is an equidigital number, since it uses as much as digits as its factorization.

2515256477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 588000, while the sum is 44.

The square root of 2515256477 is about 50152.3327174320. The cubic root of 2515256477 is about 1359.9640411845.

The spelling of 2515256477 in words is "two billion, five hundred fifteen million, two hundred fifty-six thousand, four hundred seventy-seven".