1542625361 has 2 divisors, whose sum is σ = 1542625362. Its totient is φ = 1542625360.

The previous prime is 1542625351. The next prime is 1542625363. The reversal of 1542625361 is 1635262451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1085307136 + 457318225 = 32944^2 + 21385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542625361 - 2¹⁸ = 1542363217 is a prime.

Together with 1542625363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1542625363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771312680 + 771312681.

It is an arithmetic number, because the mean of its divisors is an integer number (771312681).

Almost surely, 2^1542625361 is an apocalyptic number.

It is an amenable number.

1542625361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542625361 is an equidigital number, since it uses as much as digits as its factorization.

1542625361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 1542625361 is about 39276.2696930347. The cubic root of 1542625361 is about 1155.4562045340.

The spelling of 1542625361 in words is "one billion, five hundred forty-two million, six hundred twenty-five thousand, three hundred sixty-one".