2515400969 has 2 divisors, whose sum is σ = 2515400970. Its totient is φ = 2515400968.

The previous prime is 2515400959. The next prime is 2515400981. The reversal of 2515400969 is 9690045152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2419360969 + 96040000 = 49187^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515400969 - 2²⁴ = 2498623753 is a prime.

It is a super-2 number, since 2×2515400969² = 12654484069692277922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2515400929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257700484 + 1257700485.

It is an arithmetic number, because the mean of its divisors is an integer number (1257700485).

Almost surely, 2^2515400969 is an apocalyptic number.

It is an amenable number.

2515400969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515400969 is an equidigital number, since it uses as much as digits as its factorization.

2515400969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 2515400969 is about 50153.7732279437. The cubic root of 2515400969 is about 1359.9900822878.

The spelling of 2515400969 in words is "two billion, five hundred fifteen million, four hundred thousand, nine hundred sixty-nine".