19625797 has 2 divisors, whose sum is σ = 19625798. Its totient is φ = 19625796.

The previous prime is 19625789. The next prime is 19625843. The reversal of 19625797 is 79752691.

It is a happy number.

It is an a-pointer prime, because the next prime (19625843) can be obtained adding 19625797 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 9696996 = 3151^2 + 3114^2 .

It is a cyclic number.

It is not a de Polignac number, because 19625797 - 2³ = 19625789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19625717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9812898 + 9812899.

It is an arithmetic number, because the mean of its divisors is an integer number (9812899).

Almost surely, 2^19625797 is an apocalyptic number.

It is an amenable number.

19625797 is a deficient number, since it is larger than the sum of its proper divisors (1).

19625797 is an equidigital number, since it uses as much as digits as its factorization.

19625797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 46.

The square root of 19625797 is about 4430.1012403781. The cubic root of 19625797 is about 269.7381869943.

The spelling of 19625797 in words is "nineteen million, six hundred twenty-five thousand, seven hundred ninety-seven".