19007463660025 has 27 divisors (see below), whose sum is σ = 23907838521229. Its totient is φ = 14990581592000.

The previous prime is 19007463660019. The next prime is 19007463660037. The reversal of 19007463660025 is 52006636470091.

It is a happy number.

The square root of 19007463660025 is 4359755.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1457363227369 + 17550100432656 = 1207213^2 + 4189284^2 .

It is not a de Polignac number, because 19007463660025 - 2⁵ = 19007463659993 is a prime.

It is a super-2 number, since 2×19007463660025² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1547706885 + ... + 1547719165.

Almost surely, 2^{19007463660025} is an apocalyptic number.

19007463660025 is the 4359755-th square number.

19007463660025 is the 2179878-th centered octagonal number.

It is an amenable number.

19007463660025 is a deficient number, since it is larger than the sum of its proper divisors (4900374861204).

19007463660025 is an frugal number, since it uses more digits than its factorization.

19007463660025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24714 (or 12357 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

Multiplying 19007463660025 by its sum of digits (49), we get a square (931365719341225 = 30518285²).

The spelling of 19007463660025 in words is "nineteen trillion, seven billion, four hundred sixty-three million, six hundred sixty thousand, twenty-five".