1215125407 has 2 divisors, whose sum is σ = 1215125408. Its totient is φ = 1215125406.

The previous prime is 1215125389. The next prime is 1215125413. The reversal of 1215125407 is 7045215121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1215125407 - 2⁷ = 1215125279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1215125437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607562703 + 607562704.

It is an arithmetic number, because the mean of its divisors is an integer number (607562704).

Almost surely, 2^1215125407 is an apocalyptic number.

1215125407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215125407 is an equidigital number, since it uses as much as digits as its factorization.

1215125407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1215125407 is about 34858.6489554601. The cubic root of 1215125407 is about 1067.1047027851.

The spelling of 1215125407 in words is "one billion, two hundred fifteen million, one hundred twenty-five thousand, four hundred seven".