400625543 has 2 divisors, whose sum is σ = 400625544. Its totient is φ = 400625542.

The previous prime is 400625501. The next prime is 400625549. The reversal of 400625543 is 345526004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400625543 - 2¹⁴ = 400609159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400625549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200312771 + 200312772.

It is an arithmetic number, because the mean of its divisors is an integer number (200312772).

Almost surely, 2^400625543 is an apocalyptic number.

400625543 is a deficient number, since it is larger than the sum of its proper divisors (1).

400625543 is an equidigital number, since it uses as much as digits as its factorization.

400625543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 400625543 is about 20015.6324656504. The cubic root of 400625543 is about 737.1901863689.

The spelling of 400625543 in words is "four hundred million, six hundred twenty-five thousand, five hundred forty-three".