1725263690 has 8 divisors (see below), whose sum is σ = 3105474660. Its totient is φ = 690105472.

The previous prime is 1725263653. The next prime is 1725263693. The reversal of 1725263690 is 963625271.

It can be written as a sum of positive squares in 2 ways, for example, as 1697522401 + 27741289 = 41201^2 + 5267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1725263690² = 5953069600064832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1725263693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86263175 + ... + 86263194.

Almost surely, 2^1725263690 is an apocalyptic number.

1725263690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1725263690 is a deficient number, since it is larger than the sum of its proper divisors (1380210970).

1725263690 is a wasteful number, since it uses less digits than its factorization.

1725263690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172526376.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1725263690 is about 41536.2936478449. The cubic root of 1725263690 is about 1199.3662602780.

The spelling of 1725263690 in words is "one billion, seven hundred twenty-five million, two hundred sixty-three thousand, six hundred ninety".