1250401531 has 2 divisors, whose sum is σ = 1250401532. Its totient is φ = 1250401530.

The previous prime is 1250401501. The next prime is 1250401553. The reversal of 1250401531 is 1351040521.

It is a happy number.

It is an a-pointer prime, because the next prime (1250401553) can be obtained adding 1250401531 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1250401531 - 2¹⁷ = 1250270459 is a prime.

It is a super-2 number, since 2×1250401531² = 3127007977454287922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1250401501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625200765 + 625200766.

It is an arithmetic number, because the mean of its divisors is an integer number (625200766).

Almost surely, 2^1250401531 is an apocalyptic number.

1250401531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250401531 is an equidigital number, since it uses as much as digits as its factorization.

1250401531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1250401531 is about 35361.0171092405. The cubic root of 1250401531 is about 1077.3326756432.

The spelling of 1250401531 in words is "one billion, two hundred fifty million, four hundred one thousand, five hundred thirty-one".