1250015401 has 2 divisors, whose sum is σ = 1250015402. Its totient is φ = 1250015400.

The previous prime is 1250015399. The next prime is 1250015411. The reversal of 1250015401 is 1045100521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1198821376 + 51194025 = 34624^2 + 7155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250015401 - 2¹ = 1250015399 is a prime.

Together with 1250015399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1250015411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625007700 + 625007701.

It is an arithmetic number, because the mean of its divisors is an integer number (625007701).

Almost surely, 2^1250015401 is an apocalyptic number.

It is an amenable number.

1250015401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250015401 is an equidigital number, since it uses as much as digits as its factorization.

1250015401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1250015401 is about 35355.5568616872. The cubic root of 1250015401 is about 1077.2217690576.

Adding to 1250015401 its reverse (1045100521), we get a palindrome (2295115922).

The spelling of 1250015401 in words is "one billion, two hundred fifty million, fifteen thousand, four hundred one".