1254523957 has 2 divisors, whose sum is σ = 1254523958. Its totient is φ = 1254523956.

The previous prime is 1254523943. The next prime is 1254523967. The reversal of 1254523957 is 7593254521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1029703921 + 224820036 = 32089^2 + 14994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1254523957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254523967) 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, 627261978 + 627261979.

It is an arithmetic number, because the mean of its divisors is an integer number (627261979).

Almost surely, 2^1254523957 is an apocalyptic number.

It is an amenable number.

1254523957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254523957 is an equidigital number, since it uses as much as digits as its factorization.

1254523957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 43.

The square root of 1254523957 is about 35419.2596901742. The cubic root of 1254523957 is about 1078.5153230601.

The spelling of 1254523957 in words is "one billion, two hundred fifty-four million, five hundred twenty-three thousand, nine hundred fifty-seven".